drc: make modular on MTL and LNL

Export missing symbols for modular DRC builds and select it as a
module on MTL and LNL. DRC isn't built by default, so we cannot
use CONFIG_LIBRARY_DEFAULT_MODULAR for it.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

app/boards/intel_adsp_ace15_mtpm.conf

@@ -4,7 +4,7 @@ CONFIG_IPC4_BASE_FW_INTEL=y
 
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
 CONFIG_COMP_SRC_LITE=y
-CONFIG_COMP_DRC=y
+CONFIG_COMP_DRC=m
 CONFIG_COMP_CROSSOVER=y
 CONFIG_COMP_MULTIBAND_DRC=y
 

app/boards/intel_adsp_ace20_lnl.conf

@@ -3,7 +3,7 @@ CONFIG_IPC_MAJOR_4=y
 CONFIG_IPC4_BASE_FW_INTEL=y
 
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
-CONFIG_COMP_DRC=y
+CONFIG_COMP_DRC=m
 
 # power settings
 CONFIG_PM=y

src/math/exp_fcn.c

@@ -11,6 +11,7 @@
 #include <sof/math/numbers.h>
 #include <sof/common.h>
 #include <rtos/bit.h>
+#include <rtos/symbol.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stddef.h>
@@ -258,6 +259,7 @@ int32_t sofm_exp_fixed(int32_t x)
 
 	return y;
 }
+EXPORT_SYMBOL(sofm_exp_fixed);
 
 #endif /* EXPONENTIAL_GENERIC */
 
@@ -284,3 +286,4 @@ int32_t sofm_db2lin_fixed(int32_t db)
 	arg = (int32_t)Q_MULTSR_32X32((int64_t)db, SOFM_EXP_LOG10_DIV20_Q27, 24, 27, 27);
 	return sofm_exp_fixed(arg);
 }
+EXPORT_SYMBOL(sofm_db2lin_fixed);

src/math/exp_fcn_hifi.c

@@ -8,6 +8,7 @@
 
 #include <sof/math/exp_fcn.h>
 #include <sof/common.h>
+#include <rtos/symbol.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
@@ -370,5 +371,6 @@ int32_t sofm_exp_fixed(int32_t x)
 
 	return y;
 }
+EXPORT_SYMBOL(sofm_exp_fixed);
 
 #endif

src/math/lut_trig.c

@@ -6,6 +6,7 @@
 
 #include <sof/audio/format.h>
 #include <sof/math/lut_trig.h>
+#include <rtos/symbol.h>
 #include <stdint.h>
 
 #define SOFM_LUT_SINE_C_Q20	341782638	/* 2 * SINE_NQUART / pi in Q12.20 */
@@ -106,3 +107,4 @@ int16_t sofm_lut_sin_fixed_16b(int32_t w)
 	sine = s0 + q_mults_32x32(frac, delta, Q_SHIFT_BITS_64(31, 16, 16)); /* Q1.16 */
 	return sat_int16((sine + 1) >> 1); /* Round to Q1.15 */
 }
+EXPORT_SYMBOL(sofm_lut_sin_fixed_16b);