arch: arm: aarch32: Remove CPU type dependency from CONFIG_FP16

The commit 434ca63 introduced the
Cortex-A and Cortex-R CPU type dependency to `CONFIG_FP16` based on
the reasoning that the hardware half-precision support is only
available on them.

While it is true that the _hardware_ half-precision support is limited
to these targets, the compiler will provide the _software_ emulation
for the targets that lack the hardware half-precision support, as
mentioned in 41fd6e0 (the original
commit that introduced `CONFIG_FP16`).

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

arch/arm/core/aarch32/Kconfig

@@ -285,7 +285,6 @@ endchoice
 
 config FP16
 	bool "Half-precision floating point support"
-	depends on CPU_AARCH32_CORTEX_A || CPU_AARCH32_CORTEX_R || CPU_CORTEX_M55
 	default y
 	help
 	  This option enables the half-precision (16-bit) floating point support